.nav button:nth-child(5) { border-left-color: var(--lime); }
.nav button:nth-child(6) { border-left-color: var(--coral); }

.fig-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    justify-content: center;
    margin: 12px 0 4px;
}

.fig.pyth {
    width: min(520px, 100%);
    height: auto;
    display: block;
}

.fig.grid-sq {
    width: min(420px, 100%);
    height: auto;
}

.sq-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    justify-content: center;
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.sq-legend i {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 3px;
    margin-right: 6px;
    vertical-align: middle;
}

.method-card h3 { color: var(--gold-2); }

.calc-steps {
    margin: 10px 0 0;
    padding-left: 18px;
    display: grid;
    gap: 8px;
    line-height: 1.45;
}

.calc-steps.is-hidden { display: none; }

.hyp-mark {
    font-family: "Fraunces", serif;
    color: var(--coral);
    font-weight: 700;
}

.sqrt {
    display: inline-flex;
    align-items: stretch;
    vertical-align: -0.22em;
    white-space: nowrap;
    color: inherit;
}

.sqrt-sign {
    width: 0.72em;
    flex: 0 0 0.72em;
    height: auto;
    display: block;
    overflow: visible;
}

.sqrt-sign path {
    fill: none;
    stroke: currentColor;
    stroke-width: 2.35;
    stroke-linecap: round;
    stroke-linejoin: round;
    vector-effect: non-scaling-stroke;
}

.sqrt-rad {
    border-top: 0.11em solid currentColor;
    padding: 0.06em 0.32em 0.05em 0.1em;
    margin-left: -0.04em;
    line-height: 1.25;
}

.formula {
    overflow-wrap: normal;
    overflow-x: auto;
    white-space: nowrap;
}

.formula .sqrt {
    font-size: 1.12em;
    vertical-align: -0.28em;
}

.formula .sqrt-rad {
    padding: 0.1em 0.38em 0.08em 0.12em;
    border-top-width: 0.12em;
}

.fig.triangle-only {
    width: min(380px, 100%);
}

.fig-cap {
    margin: 0 0 4px;
    text-align: center;
    color: var(--muted);
    font-size: 0.88rem;
}

.prop-list,
.spot-list {
    margin: 10px 0 8px;
    padding-left: 1.2em;
    display: grid;
    gap: 8px;
    line-height: 1.45;
    color: var(--text);
}

.spot-list {
    padding-left: 1.35em;
}

.prop-list li,
.spot-list li {
    padding-left: 4px;
}

.copy-sheet {
    margin: 12px 0 4px;
    padding: 14px 16px 16px;
    border-radius: 14px;
    color: #1c2430;
    background-color: #f4ead6;
    background-image: repeating-linear-gradient(
        transparent 0,
        transparent 31px,
        rgba(70, 110, 170, 0.16) 32px
    );
    box-shadow: inset 0 0 0 1px rgba(40, 28, 12, 0.12);
}

.copy-kicker {
    margin: 0 0 6px;
    font-family: "Outfit", sans-serif;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #7a5420;
}

.copy-lines {
    list-style: none;
    margin: 0;
    padding: 0;
}

.copy-line {
    min-height: 32px;
    line-height: 1.45;
    padding: 5px 0;
    font-family: "Fraunces", serif;
    font-size: 1.05rem;
}

.copy-line.is-phrase { font-style: italic; }
.copy-line.is-eq { padding-left: 12px; }
.copy-line.is-result {
    font-weight: 700;
    box-shadow: inset 0 -2px 0 #c45c4a;
}

.copy-sheet .sqrt {
    color: #1c2430;
    vertical-align: -0.28em;
}